]>
Commit | Line | Data |
---|---|---|
1 | /* $USAGI: $ */ | |
2 | ||
3 | /* | |
4 | * Copyright (C)2004 USAGI/WIDE Project | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see <http://www.gnu.org/licenses>. | |
18 | */ | |
19 | /* | |
20 | * based on iproute.c | |
21 | */ | |
22 | /* | |
23 | * Authors: | |
24 | * Masahide NAKAMURA @USAGI | |
25 | */ | |
26 | ||
27 | #include <stdio.h> | |
28 | #include <stdlib.h> | |
29 | #include <string.h> | |
30 | #include <netdb.h> | |
31 | #include "utils.h" | |
32 | #include "xfrm.h" | |
33 | #include "ip_common.h" | |
34 | ||
35 | /* #define NLMSG_DELETEALL_BUF_SIZE (4096-512) */ | |
36 | #define NLMSG_DELETEALL_BUF_SIZE 8192 | |
37 | ||
38 | /* | |
39 | * Receiving buffer defines: | |
40 | * nlmsg | |
41 | * data = struct xfrm_usersa_info | |
42 | * rtattr | |
43 | * rtattr | |
44 | * ... (max count of rtattr is XFRM_MAX+1 | |
45 | * | |
46 | * each rtattr data = struct xfrm_algo(dynamic size) or xfrm_address_t | |
47 | */ | |
48 | #define NLMSG_BUF_SIZE 4096 | |
49 | #define RTA_BUF_SIZE 2048 | |
50 | #define XFRM_ALGO_KEY_BUF_SIZE 512 | |
51 | #define CTX_BUF_SIZE 256 | |
52 | ||
53 | static void usage(void) __attribute__((noreturn)); | |
54 | ||
55 | static void usage(void) | |
56 | { | |
57 | fprintf(stderr, "Usage: ip xfrm state { add | update } ID [ ALGO-LIST ] [ mode MODE ]\n"); | |
58 | fprintf(stderr, " [ mark MARK [ mask MASK ] ] [ reqid REQID ] [ seq SEQ ]\n"); | |
59 | fprintf(stderr, " [ replay-window SIZE ] [ replay-seq SEQ ] [ replay-oseq SEQ ]\n"); | |
60 | fprintf(stderr, " [ replay-seq-hi SEQ ] [ replay-oseq-hi SEQ ]\n"); | |
61 | fprintf(stderr, " [ flag FLAG-LIST ] [ sel SELECTOR ] [ LIMIT-LIST ] [ encap ENCAP ]\n"); | |
62 | fprintf(stderr, " [ coa ADDR[/PLEN] ] [ ctx CTX ] [ extra-flag EXTRA-FLAG-LIST ]\n"); | |
63 | fprintf(stderr, " [ offload [dev DEV] dir DIR ]\n"); | |
64 | fprintf(stderr, " [ output-mark OUTPUT-MARK ]\n"); | |
65 | fprintf(stderr, "Usage: ip xfrm state allocspi ID [ mode MODE ] [ mark MARK [ mask MASK ] ]\n"); | |
66 | fprintf(stderr, " [ reqid REQID ] [ seq SEQ ] [ min SPI max SPI ]\n"); | |
67 | fprintf(stderr, "Usage: ip xfrm state { delete | get } ID [ mark MARK [ mask MASK ] ]\n"); | |
68 | fprintf(stderr, "Usage: ip xfrm state { deleteall | list } [ ID ] [ mode MODE ] [ reqid REQID ]\n"); | |
69 | fprintf(stderr, " [ flag FLAG-LIST ]\n"); | |
70 | fprintf(stderr, "Usage: ip xfrm state flush [ proto XFRM-PROTO ]\n"); | |
71 | fprintf(stderr, "Usage: ip xfrm state count\n"); | |
72 | fprintf(stderr, "ID := [ src ADDR ] [ dst ADDR ] [ proto XFRM-PROTO ] [ spi SPI ]\n"); | |
73 | fprintf(stderr, "XFRM-PROTO := "); | |
74 | fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ESP)); | |
75 | fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_AH)); | |
76 | fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_COMP)); | |
77 | fprintf(stderr, "%s | ", strxf_xfrmproto(IPPROTO_ROUTING)); | |
78 | fprintf(stderr, "%s\n", strxf_xfrmproto(IPPROTO_DSTOPTS)); | |
79 | fprintf(stderr, "ALGO-LIST := [ ALGO-LIST ] ALGO\n"); | |
80 | fprintf(stderr, "ALGO := { "); | |
81 | fprintf(stderr, "%s | ", strxf_algotype(XFRMA_ALG_CRYPT)); | |
82 | fprintf(stderr, "%s", strxf_algotype(XFRMA_ALG_AUTH)); | |
83 | fprintf(stderr, " } ALGO-NAME ALGO-KEYMAT |\n"); | |
84 | fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AUTH_TRUNC)); | |
85 | fprintf(stderr, " ALGO-NAME ALGO-KEYMAT ALGO-TRUNC-LEN |\n"); | |
86 | fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_AEAD)); | |
87 | fprintf(stderr, " ALGO-NAME ALGO-KEYMAT ALGO-ICV-LEN |\n"); | |
88 | fprintf(stderr, " %s", strxf_algotype(XFRMA_ALG_COMP)); | |
89 | fprintf(stderr, " ALGO-NAME\n"); | |
90 | fprintf(stderr, "MODE := transport | tunnel | beet | ro | in_trigger\n"); | |
91 | fprintf(stderr, "FLAG-LIST := [ FLAG-LIST ] FLAG\n"); | |
92 | fprintf(stderr, "FLAG := noecn | decap-dscp | nopmtudisc | wildrecv | icmp | af-unspec | align4 | esn\n"); | |
93 | fprintf(stderr, "EXTRA-FLAG-LIST := [ EXTRA-FLAG-LIST ] EXTRA-FLAG\n"); | |
94 | fprintf(stderr, "EXTRA-FLAG := dont-encap-dscp\n"); | |
95 | fprintf(stderr, "SELECTOR := [ src ADDR[/PLEN] ] [ dst ADDR[/PLEN] ] [ dev DEV ] [ UPSPEC ]\n"); | |
96 | fprintf(stderr, "UPSPEC := proto { { "); | |
97 | fprintf(stderr, "%s | ", strxf_proto(IPPROTO_TCP)); | |
98 | fprintf(stderr, "%s | ", strxf_proto(IPPROTO_UDP)); | |
99 | fprintf(stderr, "%s | ", strxf_proto(IPPROTO_SCTP)); | |
100 | fprintf(stderr, "%s", strxf_proto(IPPROTO_DCCP)); | |
101 | fprintf(stderr, " } [ sport PORT ] [ dport PORT ] |\n"); | |
102 | fprintf(stderr, " { "); | |
103 | fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMP)); | |
104 | fprintf(stderr, "%s | ", strxf_proto(IPPROTO_ICMPV6)); | |
105 | fprintf(stderr, "%s", strxf_proto(IPPROTO_MH)); | |
106 | fprintf(stderr, " } [ type NUMBER ] [ code NUMBER ] |\n"); | |
107 | fprintf(stderr, " %s", strxf_proto(IPPROTO_GRE)); | |
108 | fprintf(stderr, " [ key { DOTTED-QUAD | NUMBER } ] | PROTO }\n"); | |
109 | fprintf(stderr, "LIMIT-LIST := [ LIMIT-LIST ] limit LIMIT\n"); | |
110 | fprintf(stderr, "LIMIT := { time-soft | time-hard | time-use-soft | time-use-hard } SECONDS |\n"); | |
111 | fprintf(stderr, " { byte-soft | byte-hard } SIZE | { packet-soft | packet-hard } COUNT\n"); | |
112 | fprintf(stderr, "ENCAP := { espinudp | espinudp-nonike } SPORT DPORT OADDR\n"); | |
113 | fprintf(stderr, "DIR := in | out\n"); | |
114 | ||
115 | exit(-1); | |
116 | } | |
117 | ||
118 | static int xfrm_algo_parse(struct xfrm_algo *alg, enum xfrm_attr_type_t type, | |
119 | char *name, char *key, char *buf, int max) | |
120 | { | |
121 | int len; | |
122 | int slen = strlen(key); | |
123 | ||
124 | #if 0 | |
125 | /* XXX: verifying both name and key is required! */ | |
126 | fprintf(stderr, "warning: ALGO-NAME/ALGO-KEYMAT values will be sent to the kernel promiscuously! (verifying them isn't implemented yet)\n"); | |
127 | #endif | |
128 | ||
129 | strlcpy(alg->alg_name, name, sizeof(alg->alg_name)); | |
130 | ||
131 | if (slen > 2 && strncmp(key, "0x", 2) == 0) { | |
132 | /* split two chars "0x" from the top */ | |
133 | char *p = key + 2; | |
134 | int plen = slen - 2; | |
135 | int i; | |
136 | int j; | |
137 | ||
138 | /* Converting hexadecimal numbered string into real key; | |
139 | * Convert each two chars into one char(value). If number | |
140 | * of the length is odd, add zero on the top for rounding. | |
141 | */ | |
142 | ||
143 | /* calculate length of the converted values(real key) */ | |
144 | len = (plen + 1) / 2; | |
145 | if (len > max) | |
146 | invarg("ALGO-KEYMAT value makes buffer overflow\n", key); | |
147 | ||
148 | for (i = -(plen % 2), j = 0; j < len; i += 2, j++) { | |
149 | char vbuf[3]; | |
150 | __u8 val; | |
151 | ||
152 | vbuf[0] = i >= 0 ? p[i] : '0'; | |
153 | vbuf[1] = p[i + 1]; | |
154 | vbuf[2] = '\0'; | |
155 | ||
156 | if (get_u8(&val, vbuf, 16)) | |
157 | invarg("ALGO-KEYMAT value is invalid", key); | |
158 | ||
159 | buf[j] = val; | |
160 | } | |
161 | } else { | |
162 | len = slen; | |
163 | if (len > 0) { | |
164 | if (len > max) | |
165 | invarg("ALGO-KEYMAT value makes buffer overflow\n", key); | |
166 | ||
167 | memcpy(buf, key, len); | |
168 | } | |
169 | } | |
170 | ||
171 | alg->alg_key_len = len * 8; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | static int xfrm_seq_parse(__u32 *seq, int *argcp, char ***argvp) | |
177 | { | |
178 | int argc = *argcp; | |
179 | char **argv = *argvp; | |
180 | ||
181 | if (get_be32(seq, *argv, 0)) | |
182 | invarg("SEQ value is invalid", *argv); | |
183 | ||
184 | *argcp = argc; | |
185 | *argvp = argv; | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int xfrm_state_flag_parse(__u8 *flags, int *argcp, char ***argvp) | |
191 | { | |
192 | int argc = *argcp; | |
193 | char **argv = *argvp; | |
194 | int len = strlen(*argv); | |
195 | ||
196 | if (len > 2 && strncmp(*argv, "0x", 2) == 0) { | |
197 | __u8 val = 0; | |
198 | ||
199 | if (get_u8(&val, *argv, 16)) | |
200 | invarg("FLAG value is invalid", *argv); | |
201 | *flags = val; | |
202 | } else { | |
203 | while (1) { | |
204 | if (strcmp(*argv, "noecn") == 0) | |
205 | *flags |= XFRM_STATE_NOECN; | |
206 | else if (strcmp(*argv, "decap-dscp") == 0) | |
207 | *flags |= XFRM_STATE_DECAP_DSCP; | |
208 | else if (strcmp(*argv, "nopmtudisc") == 0) | |
209 | *flags |= XFRM_STATE_NOPMTUDISC; | |
210 | else if (strcmp(*argv, "wildrecv") == 0) | |
211 | *flags |= XFRM_STATE_WILDRECV; | |
212 | else if (strcmp(*argv, "icmp") == 0) | |
213 | *flags |= XFRM_STATE_ICMP; | |
214 | else if (strcmp(*argv, "af-unspec") == 0) | |
215 | *flags |= XFRM_STATE_AF_UNSPEC; | |
216 | else if (strcmp(*argv, "align4") == 0) | |
217 | *flags |= XFRM_STATE_ALIGN4; | |
218 | else if (strcmp(*argv, "esn") == 0) | |
219 | *flags |= XFRM_STATE_ESN; | |
220 | else { | |
221 | PREV_ARG(); /* back track */ | |
222 | break; | |
223 | } | |
224 | ||
225 | if (!NEXT_ARG_OK()) | |
226 | break; | |
227 | NEXT_ARG(); | |
228 | } | |
229 | } | |
230 | ||
231 | *argcp = argc; | |
232 | *argvp = argv; | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | static int xfrm_state_extra_flag_parse(__u32 *extra_flags, int *argcp, char ***argvp) | |
238 | { | |
239 | int argc = *argcp; | |
240 | char **argv = *argvp; | |
241 | int len = strlen(*argv); | |
242 | ||
243 | if (len > 2 && strncmp(*argv, "0x", 2) == 0) { | |
244 | __u32 val = 0; | |
245 | ||
246 | if (get_u32(&val, *argv, 16)) | |
247 | invarg("\"EXTRA-FLAG\" is invalid", *argv); | |
248 | *extra_flags = val; | |
249 | } else { | |
250 | while (1) { | |
251 | if (strcmp(*argv, "dont-encap-dscp") == 0) | |
252 | *extra_flags |= XFRM_SA_XFLAG_DONT_ENCAP_DSCP; | |
253 | else { | |
254 | PREV_ARG(); /* back track */ | |
255 | break; | |
256 | } | |
257 | ||
258 | if (!NEXT_ARG_OK()) | |
259 | break; | |
260 | NEXT_ARG(); | |
261 | } | |
262 | } | |
263 | ||
264 | *argcp = argc; | |
265 | *argvp = argv; | |
266 | ||
267 | return 0; | |
268 | } | |
269 | ||
270 | static int xfrm_offload_dir_parse(__u8 *dir, int *argcp, char ***argvp) | |
271 | { | |
272 | int argc = *argcp; | |
273 | char **argv = *argvp; | |
274 | ||
275 | if (strcmp(*argv, "in") == 0) | |
276 | *dir = XFRM_OFFLOAD_INBOUND; | |
277 | else if (strcmp(*argv, "out") == 0) | |
278 | *dir = 0; | |
279 | else | |
280 | invarg("DIR value is invalid", *argv); | |
281 | ||
282 | *argcp = argc; | |
283 | *argvp = argv; | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | static int xfrm_state_modify(int cmd, unsigned int flags, int argc, char **argv) | |
289 | { | |
290 | struct rtnl_handle rth; | |
291 | struct { | |
292 | struct nlmsghdr n; | |
293 | struct xfrm_usersa_info xsinfo; | |
294 | char buf[RTA_BUF_SIZE]; | |
295 | } req = { | |
296 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsinfo)), | |
297 | .n.nlmsg_flags = NLM_F_REQUEST | flags, | |
298 | .n.nlmsg_type = cmd, | |
299 | .xsinfo.family = preferred_family, | |
300 | .xsinfo.lft.soft_byte_limit = XFRM_INF, | |
301 | .xsinfo.lft.hard_byte_limit = XFRM_INF, | |
302 | .xsinfo.lft.soft_packet_limit = XFRM_INF, | |
303 | .xsinfo.lft.hard_packet_limit = XFRM_INF, | |
304 | }; | |
305 | struct xfrm_replay_state replay = {}; | |
306 | struct xfrm_replay_state_esn replay_esn = {}; | |
307 | struct xfrm_user_offload xuo = {}; | |
308 | unsigned int ifindex = 0; | |
309 | __u8 dir = 0; | |
310 | bool is_offload = false; | |
311 | __u32 replay_window = 0; | |
312 | __u32 seq = 0, oseq = 0, seq_hi = 0, oseq_hi = 0; | |
313 | char *idp = NULL; | |
314 | char *aeadop = NULL; | |
315 | char *ealgop = NULL; | |
316 | char *aalgop = NULL; | |
317 | char *calgop = NULL; | |
318 | char *coap = NULL; | |
319 | char *sctxp = NULL; | |
320 | __u32 extra_flags = 0; | |
321 | struct xfrm_mark mark = {0, 0}; | |
322 | struct { | |
323 | struct xfrm_user_sec_ctx sctx; | |
324 | char str[CTX_BUF_SIZE]; | |
325 | } ctx = {}; | |
326 | __u32 output_mark = 0; | |
327 | ||
328 | while (argc > 0) { | |
329 | if (strcmp(*argv, "mode") == 0) { | |
330 | NEXT_ARG(); | |
331 | xfrm_mode_parse(&req.xsinfo.mode, &argc, &argv); | |
332 | } else if (strcmp(*argv, "mark") == 0) { | |
333 | xfrm_parse_mark(&mark, &argc, &argv); | |
334 | } else if (strcmp(*argv, "reqid") == 0) { | |
335 | NEXT_ARG(); | |
336 | xfrm_reqid_parse(&req.xsinfo.reqid, &argc, &argv); | |
337 | } else if (strcmp(*argv, "seq") == 0) { | |
338 | NEXT_ARG(); | |
339 | xfrm_seq_parse(&req.xsinfo.seq, &argc, &argv); | |
340 | } else if (strcmp(*argv, "replay-window") == 0) { | |
341 | NEXT_ARG(); | |
342 | if (get_u32(&replay_window, *argv, 0)) | |
343 | invarg("value after \"replay-window\" is invalid", *argv); | |
344 | } else if (strcmp(*argv, "replay-seq") == 0) { | |
345 | NEXT_ARG(); | |
346 | if (get_u32(&seq, *argv, 0)) | |
347 | invarg("value after \"replay-seq\" is invalid", *argv); | |
348 | } else if (strcmp(*argv, "replay-seq-hi") == 0) { | |
349 | NEXT_ARG(); | |
350 | if (get_u32(&seq_hi, *argv, 0)) | |
351 | invarg("value after \"replay-seq-hi\" is invalid", *argv); | |
352 | } else if (strcmp(*argv, "replay-oseq") == 0) { | |
353 | NEXT_ARG(); | |
354 | if (get_u32(&oseq, *argv, 0)) | |
355 | invarg("value after \"replay-oseq\" is invalid", *argv); | |
356 | } else if (strcmp(*argv, "replay-oseq-hi") == 0) { | |
357 | NEXT_ARG(); | |
358 | if (get_u32(&oseq_hi, *argv, 0)) | |
359 | invarg("value after \"replay-oseq-hi\" is invalid", *argv); | |
360 | } else if (strcmp(*argv, "flag") == 0) { | |
361 | NEXT_ARG(); | |
362 | xfrm_state_flag_parse(&req.xsinfo.flags, &argc, &argv); | |
363 | } else if (strcmp(*argv, "extra-flag") == 0) { | |
364 | NEXT_ARG(); | |
365 | xfrm_state_extra_flag_parse(&extra_flags, &argc, &argv); | |
366 | } else if (strcmp(*argv, "sel") == 0) { | |
367 | NEXT_ARG(); | |
368 | preferred_family = AF_UNSPEC; | |
369 | xfrm_selector_parse(&req.xsinfo.sel, &argc, &argv); | |
370 | preferred_family = req.xsinfo.sel.family; | |
371 | } else if (strcmp(*argv, "limit") == 0) { | |
372 | NEXT_ARG(); | |
373 | xfrm_lifetime_cfg_parse(&req.xsinfo.lft, &argc, &argv); | |
374 | } else if (strcmp(*argv, "encap") == 0) { | |
375 | struct xfrm_encap_tmpl encap; | |
376 | inet_prefix oa; | |
377 | NEXT_ARG(); | |
378 | xfrm_encap_type_parse(&encap.encap_type, &argc, &argv); | |
379 | NEXT_ARG(); | |
380 | if (get_be16(&encap.encap_sport, *argv, 0)) | |
381 | invarg("SPORT value after \"encap\" is invalid", *argv); | |
382 | NEXT_ARG(); | |
383 | if (get_be16(&encap.encap_dport, *argv, 0)) | |
384 | invarg("DPORT value after \"encap\" is invalid", *argv); | |
385 | NEXT_ARG(); | |
386 | get_addr(&oa, *argv, AF_UNSPEC); | |
387 | memcpy(&encap.encap_oa, &oa.data, sizeof(encap.encap_oa)); | |
388 | addattr_l(&req.n, sizeof(req.buf), XFRMA_ENCAP, | |
389 | (void *)&encap, sizeof(encap)); | |
390 | } else if (strcmp(*argv, "coa") == 0) { | |
391 | inet_prefix coa; | |
392 | xfrm_address_t xcoa = {}; | |
393 | ||
394 | if (coap) | |
395 | duparg("coa", *argv); | |
396 | coap = *argv; | |
397 | ||
398 | NEXT_ARG(); | |
399 | ||
400 | get_prefix(&coa, *argv, preferred_family); | |
401 | if (coa.family == AF_UNSPEC) | |
402 | invarg("value after \"coa\" has an unrecognized address family", *argv); | |
403 | if (coa.bytelen > sizeof(xcoa)) | |
404 | invarg("value after \"coa\" is too large", *argv); | |
405 | ||
406 | memcpy(&xcoa, &coa.data, coa.bytelen); | |
407 | ||
408 | addattr_l(&req.n, sizeof(req.buf), XFRMA_COADDR, | |
409 | (void *)&xcoa, sizeof(xcoa)); | |
410 | } else if (strcmp(*argv, "ctx") == 0) { | |
411 | char *context; | |
412 | ||
413 | if (sctxp) | |
414 | duparg("ctx", *argv); | |
415 | sctxp = *argv; | |
416 | ||
417 | NEXT_ARG(); | |
418 | context = *argv; | |
419 | ||
420 | xfrm_sctx_parse((char *)&ctx.str, context, &ctx.sctx); | |
421 | addattr_l(&req.n, sizeof(req.buf), XFRMA_SEC_CTX, | |
422 | (void *)&ctx, ctx.sctx.len); | |
423 | } else if (strcmp(*argv, "offload") == 0) { | |
424 | is_offload = true; | |
425 | NEXT_ARG(); | |
426 | if (strcmp(*argv, "dev") == 0) { | |
427 | NEXT_ARG(); | |
428 | ifindex = ll_name_to_index(*argv); | |
429 | if (!ifindex) { | |
430 | invarg("value after \"offload dev\" is invalid", *argv); | |
431 | is_offload = false; | |
432 | } | |
433 | NEXT_ARG(); | |
434 | } | |
435 | if (strcmp(*argv, "dir") == 0) { | |
436 | NEXT_ARG(); | |
437 | xfrm_offload_dir_parse(&dir, &argc, &argv); | |
438 | } else { | |
439 | invarg("value after \"offload dir\" is invalid", *argv); | |
440 | is_offload = false; | |
441 | } | |
442 | } else if (strcmp(*argv, "output-mark") == 0) { | |
443 | NEXT_ARG(); | |
444 | if (get_u32(&output_mark, *argv, 0)) | |
445 | invarg("value after \"output-mark\" is invalid", *argv); | |
446 | } else { | |
447 | /* try to assume ALGO */ | |
448 | int type = xfrm_algotype_getbyname(*argv); | |
449 | ||
450 | switch (type) { | |
451 | case XFRMA_ALG_AEAD: | |
452 | case XFRMA_ALG_CRYPT: | |
453 | case XFRMA_ALG_AUTH: | |
454 | case XFRMA_ALG_AUTH_TRUNC: | |
455 | case XFRMA_ALG_COMP: | |
456 | { | |
457 | /* ALGO */ | |
458 | struct { | |
459 | union { | |
460 | struct xfrm_algo alg; | |
461 | struct xfrm_algo_aead aead; | |
462 | struct xfrm_algo_auth auth; | |
463 | } u; | |
464 | char buf[XFRM_ALGO_KEY_BUF_SIZE]; | |
465 | } alg = {}; | |
466 | int len; | |
467 | __u32 icvlen, trunclen; | |
468 | char *name; | |
469 | char *key = ""; | |
470 | char *buf; | |
471 | ||
472 | switch (type) { | |
473 | case XFRMA_ALG_AEAD: | |
474 | if (ealgop || aalgop || aeadop) | |
475 | duparg("ALGO-TYPE", *argv); | |
476 | aeadop = *argv; | |
477 | break; | |
478 | case XFRMA_ALG_CRYPT: | |
479 | if (ealgop || aeadop) | |
480 | duparg("ALGO-TYPE", *argv); | |
481 | ealgop = *argv; | |
482 | break; | |
483 | case XFRMA_ALG_AUTH: | |
484 | case XFRMA_ALG_AUTH_TRUNC: | |
485 | if (aalgop || aeadop) | |
486 | duparg("ALGO-TYPE", *argv); | |
487 | aalgop = *argv; | |
488 | break; | |
489 | case XFRMA_ALG_COMP: | |
490 | if (calgop) | |
491 | duparg("ALGO-TYPE", *argv); | |
492 | calgop = *argv; | |
493 | break; | |
494 | default: | |
495 | /* not reached */ | |
496 | invarg("ALGO-TYPE value is invalid\n", *argv); | |
497 | } | |
498 | ||
499 | if (!NEXT_ARG_OK()) | |
500 | missarg("ALGO-NAME"); | |
501 | NEXT_ARG(); | |
502 | name = *argv; | |
503 | ||
504 | switch (type) { | |
505 | case XFRMA_ALG_AEAD: | |
506 | case XFRMA_ALG_CRYPT: | |
507 | case XFRMA_ALG_AUTH: | |
508 | case XFRMA_ALG_AUTH_TRUNC: | |
509 | if (!NEXT_ARG_OK()) | |
510 | missarg("ALGO-KEYMAT"); | |
511 | NEXT_ARG(); | |
512 | key = *argv; | |
513 | break; | |
514 | } | |
515 | ||
516 | buf = alg.u.alg.alg_key; | |
517 | len = sizeof(alg.u.alg); | |
518 | ||
519 | switch (type) { | |
520 | case XFRMA_ALG_AEAD: | |
521 | if (!NEXT_ARG_OK()) | |
522 | missarg("ALGO-ICV-LEN"); | |
523 | NEXT_ARG(); | |
524 | if (get_u32(&icvlen, *argv, 0)) | |
525 | invarg("ALGO-ICV-LEN value is invalid", | |
526 | *argv); | |
527 | alg.u.aead.alg_icv_len = icvlen; | |
528 | ||
529 | buf = alg.u.aead.alg_key; | |
530 | len = sizeof(alg.u.aead); | |
531 | break; | |
532 | case XFRMA_ALG_AUTH_TRUNC: | |
533 | if (!NEXT_ARG_OK()) | |
534 | missarg("ALGO-TRUNC-LEN"); | |
535 | NEXT_ARG(); | |
536 | if (get_u32(&trunclen, *argv, 0)) | |
537 | invarg("ALGO-TRUNC-LEN value is invalid", | |
538 | *argv); | |
539 | alg.u.auth.alg_trunc_len = trunclen; | |
540 | ||
541 | buf = alg.u.auth.alg_key; | |
542 | len = sizeof(alg.u.auth); | |
543 | break; | |
544 | } | |
545 | ||
546 | xfrm_algo_parse((void *)&alg, type, name, key, | |
547 | buf, sizeof(alg.buf)); | |
548 | len += alg.u.alg.alg_key_len / 8; | |
549 | ||
550 | addattr_l(&req.n, sizeof(req.buf), type, | |
551 | (void *)&alg, len); | |
552 | break; | |
553 | } | |
554 | default: | |
555 | /* try to assume ID */ | |
556 | if (idp) | |
557 | invarg("unknown", *argv); | |
558 | idp = *argv; | |
559 | ||
560 | /* ID */ | |
561 | xfrm_id_parse(&req.xsinfo.saddr, &req.xsinfo.id, | |
562 | &req.xsinfo.family, 0, &argc, &argv); | |
563 | if (preferred_family == AF_UNSPEC) | |
564 | preferred_family = req.xsinfo.family; | |
565 | } | |
566 | } | |
567 | argc--; argv++; | |
568 | } | |
569 | ||
570 | if (req.xsinfo.flags & XFRM_STATE_ESN && | |
571 | replay_window == 0) { | |
572 | fprintf(stderr, "Error: esn flag set without replay-window.\n"); | |
573 | exit(-1); | |
574 | } | |
575 | ||
576 | if (replay_window > XFRMA_REPLAY_ESN_MAX) { | |
577 | fprintf(stderr, | |
578 | "Error: replay-window (%u) > XFRMA_REPLAY_ESN_MAX (%u).\n", | |
579 | replay_window, XFRMA_REPLAY_ESN_MAX); | |
580 | exit(-1); | |
581 | } | |
582 | ||
583 | if (is_offload) { | |
584 | xuo.ifindex = ifindex; | |
585 | xuo.flags = dir; | |
586 | addattr_l(&req.n, sizeof(req.buf), XFRMA_OFFLOAD_DEV, &xuo, | |
587 | sizeof(xuo)); | |
588 | } | |
589 | if (req.xsinfo.flags & XFRM_STATE_ESN || | |
590 | replay_window > (sizeof(replay.bitmap) * 8)) { | |
591 | replay_esn.seq = seq; | |
592 | replay_esn.oseq = oseq; | |
593 | replay_esn.seq_hi = seq_hi; | |
594 | replay_esn.oseq_hi = oseq_hi; | |
595 | replay_esn.replay_window = replay_window; | |
596 | replay_esn.bmp_len = (replay_window + sizeof(__u32) * 8 - 1) / | |
597 | (sizeof(__u32) * 8); | |
598 | addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_ESN_VAL, | |
599 | &replay_esn, sizeof(replay_esn)); | |
600 | } else { | |
601 | if (seq || oseq) { | |
602 | replay.seq = seq; | |
603 | replay.oseq = oseq; | |
604 | addattr_l(&req.n, sizeof(req.buf), XFRMA_REPLAY_VAL, | |
605 | &replay, sizeof(replay)); | |
606 | } | |
607 | req.xsinfo.replay_window = replay_window; | |
608 | } | |
609 | ||
610 | if (extra_flags) | |
611 | addattr32(&req.n, sizeof(req.buf), XFRMA_SA_EXTRA_FLAGS, | |
612 | extra_flags); | |
613 | ||
614 | if (!idp) { | |
615 | fprintf(stderr, "Not enough information: ID is required\n"); | |
616 | exit(1); | |
617 | } | |
618 | ||
619 | if (mark.m) { | |
620 | int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, | |
621 | (void *)&mark, sizeof(mark)); | |
622 | if (r < 0) { | |
623 | fprintf(stderr, "XFRMA_MARK failed\n"); | |
624 | exit(1); | |
625 | } | |
626 | } | |
627 | ||
628 | if (xfrm_xfrmproto_is_ipsec(req.xsinfo.id.proto)) { | |
629 | switch (req.xsinfo.mode) { | |
630 | case XFRM_MODE_TRANSPORT: | |
631 | case XFRM_MODE_TUNNEL: | |
632 | break; | |
633 | case XFRM_MODE_BEET: | |
634 | if (req.xsinfo.id.proto == IPPROTO_ESP) | |
635 | break; | |
636 | default: | |
637 | fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n", | |
638 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
639 | exit(1); | |
640 | } | |
641 | ||
642 | switch (req.xsinfo.id.proto) { | |
643 | case IPPROTO_ESP: | |
644 | if (calgop) { | |
645 | fprintf(stderr, "ALGO-TYPE value \"%s\" is invalid with XFRM-PROTO value \"%s\"\n", | |
646 | strxf_algotype(XFRMA_ALG_COMP), | |
647 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
648 | exit(1); | |
649 | } | |
650 | if (!ealgop && !aeadop) { | |
651 | fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n", | |
652 | strxf_algotype(XFRMA_ALG_CRYPT), | |
653 | strxf_algotype(XFRMA_ALG_AEAD), | |
654 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
655 | exit(1); | |
656 | } | |
657 | break; | |
658 | case IPPROTO_AH: | |
659 | if (ealgop || aeadop || calgop) { | |
660 | fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n", | |
661 | strxf_algotype(XFRMA_ALG_CRYPT), | |
662 | strxf_algotype(XFRMA_ALG_AEAD), | |
663 | strxf_algotype(XFRMA_ALG_COMP), | |
664 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
665 | exit(1); | |
666 | } | |
667 | if (!aalgop) { | |
668 | fprintf(stderr, "ALGO-TYPE value \"%s\" or \"%s\" is required with XFRM-PROTO value \"%s\"\n", | |
669 | strxf_algotype(XFRMA_ALG_AUTH), | |
670 | strxf_algotype(XFRMA_ALG_AUTH_TRUNC), | |
671 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
672 | exit(1); | |
673 | } | |
674 | break; | |
675 | case IPPROTO_COMP: | |
676 | if (ealgop || aalgop || aeadop) { | |
677 | fprintf(stderr, "ALGO-TYPE values \"%s\", \"%s\", \"%s\", and \"%s\" are invalid with XFRM-PROTO value \"%s\"\n", | |
678 | strxf_algotype(XFRMA_ALG_CRYPT), | |
679 | strxf_algotype(XFRMA_ALG_AUTH), | |
680 | strxf_algotype(XFRMA_ALG_AUTH_TRUNC), | |
681 | strxf_algotype(XFRMA_ALG_AEAD), | |
682 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
683 | exit(1); | |
684 | } | |
685 | if (!calgop) { | |
686 | fprintf(stderr, "ALGO-TYPE value \"%s\" is required with XFRM-PROTO value \"%s\"\n", | |
687 | strxf_algotype(XFRMA_ALG_COMP), | |
688 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
689 | exit(1); | |
690 | } | |
691 | break; | |
692 | } | |
693 | } else { | |
694 | if (ealgop || aalgop || aeadop || calgop) { | |
695 | fprintf(stderr, "ALGO is invalid with XFRM-PROTO value \"%s\"\n", | |
696 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
697 | exit(1); | |
698 | } | |
699 | } | |
700 | ||
701 | if (xfrm_xfrmproto_is_ro(req.xsinfo.id.proto)) { | |
702 | switch (req.xsinfo.mode) { | |
703 | case XFRM_MODE_ROUTEOPTIMIZATION: | |
704 | case XFRM_MODE_IN_TRIGGER: | |
705 | break; | |
706 | case 0: | |
707 | fprintf(stderr, "\"mode\" is required with XFRM-PROTO value \"%s\"\n", | |
708 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
709 | exit(1); | |
710 | default: | |
711 | fprintf(stderr, "MODE value is invalid with XFRM-PROTO value \"%s\"\n", | |
712 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
713 | exit(1); | |
714 | } | |
715 | ||
716 | if (!coap) { | |
717 | fprintf(stderr, "\"coa\" is required with XFRM-PROTO value \"%s\"\n", | |
718 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
719 | exit(1); | |
720 | } | |
721 | } else { | |
722 | if (coap) { | |
723 | fprintf(stderr, "\"coa\" is invalid with XFRM-PROTO value \"%s\"\n", | |
724 | strxf_xfrmproto(req.xsinfo.id.proto)); | |
725 | exit(1); | |
726 | } | |
727 | } | |
728 | ||
729 | if (output_mark) | |
730 | addattr32(&req.n, sizeof(req.buf), XFRMA_OUTPUT_MARK, output_mark); | |
731 | ||
732 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
733 | exit(1); | |
734 | ||
735 | if (req.xsinfo.family == AF_UNSPEC) | |
736 | req.xsinfo.family = AF_INET; | |
737 | ||
738 | if (rtnl_talk(&rth, &req.n, NULL) < 0) | |
739 | exit(2); | |
740 | ||
741 | rtnl_close(&rth); | |
742 | ||
743 | return 0; | |
744 | } | |
745 | ||
746 | static int xfrm_state_allocspi(int argc, char **argv) | |
747 | { | |
748 | struct rtnl_handle rth; | |
749 | struct { | |
750 | struct nlmsghdr n; | |
751 | struct xfrm_userspi_info xspi; | |
752 | char buf[RTA_BUF_SIZE]; | |
753 | } req = { | |
754 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xspi)), | |
755 | .n.nlmsg_flags = NLM_F_REQUEST, | |
756 | .n.nlmsg_type = XFRM_MSG_ALLOCSPI, | |
757 | .xspi.info.family = preferred_family, | |
758 | #if 0 | |
759 | .xspi.lft.soft_byte_limit = XFRM_INF, | |
760 | .xspi.lft.hard_byte_limit = XFRM_INF, | |
761 | .xspi.lft.soft_packet_limit = XFRM_INF, | |
762 | .xspi.lft.hard_packet_limit = XFRM_INF, | |
763 | #endif | |
764 | }; | |
765 | char *idp = NULL; | |
766 | char *minp = NULL; | |
767 | char *maxp = NULL; | |
768 | struct xfrm_mark mark = {0, 0}; | |
769 | struct nlmsghdr *answer; | |
770 | ||
771 | while (argc > 0) { | |
772 | if (strcmp(*argv, "mode") == 0) { | |
773 | NEXT_ARG(); | |
774 | xfrm_mode_parse(&req.xspi.info.mode, &argc, &argv); | |
775 | } else if (strcmp(*argv, "mark") == 0) { | |
776 | xfrm_parse_mark(&mark, &argc, &argv); | |
777 | } else if (strcmp(*argv, "reqid") == 0) { | |
778 | NEXT_ARG(); | |
779 | xfrm_reqid_parse(&req.xspi.info.reqid, &argc, &argv); | |
780 | } else if (strcmp(*argv, "seq") == 0) { | |
781 | NEXT_ARG(); | |
782 | xfrm_seq_parse(&req.xspi.info.seq, &argc, &argv); | |
783 | } else if (strcmp(*argv, "min") == 0) { | |
784 | if (minp) | |
785 | duparg("min", *argv); | |
786 | minp = *argv; | |
787 | ||
788 | NEXT_ARG(); | |
789 | ||
790 | if (get_u32(&req.xspi.min, *argv, 0)) | |
791 | invarg("value after \"min\" is invalid", *argv); | |
792 | } else if (strcmp(*argv, "max") == 0) { | |
793 | if (maxp) | |
794 | duparg("max", *argv); | |
795 | maxp = *argv; | |
796 | ||
797 | NEXT_ARG(); | |
798 | ||
799 | if (get_u32(&req.xspi.max, *argv, 0)) | |
800 | invarg("value after \"max\" is invalid", *argv); | |
801 | } else { | |
802 | /* try to assume ID */ | |
803 | if (idp) | |
804 | invarg("unknown", *argv); | |
805 | idp = *argv; | |
806 | ||
807 | /* ID */ | |
808 | xfrm_id_parse(&req.xspi.info.saddr, &req.xspi.info.id, | |
809 | &req.xspi.info.family, 0, &argc, &argv); | |
810 | if (req.xspi.info.id.spi) { | |
811 | fprintf(stderr, "\"spi\" is invalid\n"); | |
812 | exit(1); | |
813 | } | |
814 | if (preferred_family == AF_UNSPEC) | |
815 | preferred_family = req.xspi.info.family; | |
816 | } | |
817 | argc--; argv++; | |
818 | } | |
819 | ||
820 | if (!idp) { | |
821 | fprintf(stderr, "Not enough information: ID is required\n"); | |
822 | exit(1); | |
823 | } | |
824 | ||
825 | if (minp) { | |
826 | if (!maxp) { | |
827 | fprintf(stderr, "\"max\" is missing\n"); | |
828 | exit(1); | |
829 | } | |
830 | if (req.xspi.min > req.xspi.max) { | |
831 | fprintf(stderr, "value after \"min\" is larger than value after \"max\"\n"); | |
832 | exit(1); | |
833 | } | |
834 | } else { | |
835 | if (maxp) { | |
836 | fprintf(stderr, "\"min\" is missing\n"); | |
837 | exit(1); | |
838 | } | |
839 | ||
840 | /* XXX: Default value defined in PF_KEY; | |
841 | * See kernel's net/key/af_key.c(pfkey_getspi). | |
842 | */ | |
843 | req.xspi.min = 0x100; | |
844 | req.xspi.max = 0x0fffffff; | |
845 | ||
846 | /* XXX: IPCOMP spi is 16-bits; | |
847 | * See kernel's net/xfrm/xfrm_user(verify_userspi_info). | |
848 | */ | |
849 | if (req.xspi.info.id.proto == IPPROTO_COMP) | |
850 | req.xspi.max = 0xffff; | |
851 | } | |
852 | ||
853 | if (mark.m & mark.v) { | |
854 | int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, | |
855 | (void *)&mark, sizeof(mark)); | |
856 | if (r < 0) { | |
857 | fprintf(stderr, "XFRMA_MARK failed\n"); | |
858 | exit(1); | |
859 | } | |
860 | } | |
861 | ||
862 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
863 | exit(1); | |
864 | ||
865 | if (req.xspi.info.family == AF_UNSPEC) | |
866 | req.xspi.info.family = AF_INET; | |
867 | ||
868 | ||
869 | if (rtnl_talk(&rth, &req.n, &answer) < 0) | |
870 | exit(2); | |
871 | ||
872 | if (xfrm_state_print(answer, (void *)stdout) < 0) { | |
873 | fprintf(stderr, "An error :-)\n"); | |
874 | exit(1); | |
875 | } | |
876 | ||
877 | free(answer); | |
878 | rtnl_close(&rth); | |
879 | ||
880 | return 0; | |
881 | } | |
882 | ||
883 | static int xfrm_state_filter_match(struct xfrm_usersa_info *xsinfo) | |
884 | { | |
885 | if (!filter.use) | |
886 | return 1; | |
887 | ||
888 | if (filter.id_src_mask) | |
889 | if (xfrm_addr_match(&xsinfo->saddr, &filter.xsinfo.saddr, | |
890 | filter.id_src_mask)) | |
891 | return 0; | |
892 | if (filter.id_dst_mask) | |
893 | if (xfrm_addr_match(&xsinfo->id.daddr, &filter.xsinfo.id.daddr, | |
894 | filter.id_dst_mask)) | |
895 | return 0; | |
896 | if ((xsinfo->id.proto^filter.xsinfo.id.proto)&filter.id_proto_mask) | |
897 | return 0; | |
898 | if ((xsinfo->id.spi^filter.xsinfo.id.spi)&filter.id_spi_mask) | |
899 | return 0; | |
900 | if ((xsinfo->mode^filter.xsinfo.mode)&filter.mode_mask) | |
901 | return 0; | |
902 | if ((xsinfo->reqid^filter.xsinfo.reqid)&filter.reqid_mask) | |
903 | return 0; | |
904 | if (filter.state_flags_mask) | |
905 | if ((xsinfo->flags & filter.xsinfo.flags) == 0) | |
906 | return 0; | |
907 | ||
908 | return 1; | |
909 | } | |
910 | ||
911 | int xfrm_state_print(struct nlmsghdr *n, void *arg) | |
912 | { | |
913 | FILE *fp = (FILE *)arg; | |
914 | struct rtattr *tb[XFRMA_MAX+1]; | |
915 | struct rtattr *rta; | |
916 | struct xfrm_usersa_info *xsinfo = NULL; | |
917 | struct xfrm_user_expire *xexp = NULL; | |
918 | struct xfrm_usersa_id *xsid = NULL; | |
919 | int len = n->nlmsg_len; | |
920 | ||
921 | if (n->nlmsg_type != XFRM_MSG_NEWSA && | |
922 | n->nlmsg_type != XFRM_MSG_DELSA && | |
923 | n->nlmsg_type != XFRM_MSG_UPDSA && | |
924 | n->nlmsg_type != XFRM_MSG_EXPIRE) { | |
925 | fprintf(stderr, "Not a state: %08x %08x %08x\n", | |
926 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
927 | return 0; | |
928 | } | |
929 | ||
930 | if (n->nlmsg_type == XFRM_MSG_DELSA) { | |
931 | /* Don't blame me for this .. Herbert made me do it */ | |
932 | xsid = NLMSG_DATA(n); | |
933 | len -= NLMSG_SPACE(sizeof(*xsid)); | |
934 | } else if (n->nlmsg_type == XFRM_MSG_EXPIRE) { | |
935 | xexp = NLMSG_DATA(n); | |
936 | xsinfo = &xexp->state; | |
937 | len -= NLMSG_SPACE(sizeof(*xexp)); | |
938 | } else { | |
939 | xexp = NULL; | |
940 | xsinfo = NLMSG_DATA(n); | |
941 | len -= NLMSG_SPACE(sizeof(*xsinfo)); | |
942 | } | |
943 | ||
944 | if (len < 0) { | |
945 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); | |
946 | return -1; | |
947 | } | |
948 | ||
949 | if (xsinfo && !xfrm_state_filter_match(xsinfo)) | |
950 | return 0; | |
951 | ||
952 | if (n->nlmsg_type == XFRM_MSG_DELSA) | |
953 | fprintf(fp, "Deleted "); | |
954 | else if (n->nlmsg_type == XFRM_MSG_UPDSA) | |
955 | fprintf(fp, "Updated "); | |
956 | else if (n->nlmsg_type == XFRM_MSG_EXPIRE) | |
957 | fprintf(fp, "Expired "); | |
958 | ||
959 | if (n->nlmsg_type == XFRM_MSG_DELSA) | |
960 | rta = XFRMSID_RTA(xsid); | |
961 | else if (n->nlmsg_type == XFRM_MSG_EXPIRE) | |
962 | rta = XFRMEXP_RTA(xexp); | |
963 | else | |
964 | rta = XFRMS_RTA(xsinfo); | |
965 | ||
966 | parse_rtattr(tb, XFRMA_MAX, rta, len); | |
967 | ||
968 | if (n->nlmsg_type == XFRM_MSG_DELSA) { | |
969 | /* xfrm_policy_id_print(); */ | |
970 | ||
971 | if (!tb[XFRMA_SA]) { | |
972 | fprintf(stderr, "Buggy XFRM_MSG_DELSA: no XFRMA_SA\n"); | |
973 | return -1; | |
974 | } | |
975 | if (RTA_PAYLOAD(tb[XFRMA_SA]) < sizeof(*xsinfo)) { | |
976 | fprintf(stderr, "Buggy XFRM_MSG_DELPOLICY: too short XFRMA_POLICY len\n"); | |
977 | return -1; | |
978 | } | |
979 | xsinfo = RTA_DATA(tb[XFRMA_SA]); | |
980 | } | |
981 | ||
982 | xfrm_state_info_print(xsinfo, tb, fp, NULL, NULL); | |
983 | ||
984 | if (n->nlmsg_type == XFRM_MSG_EXPIRE) { | |
985 | fprintf(fp, "\t"); | |
986 | fprintf(fp, "hard %u", xexp->hard); | |
987 | fprintf(fp, "%s", _SL_); | |
988 | } | |
989 | ||
990 | if (oneline) | |
991 | fprintf(fp, "\n"); | |
992 | fflush(fp); | |
993 | ||
994 | return 0; | |
995 | } | |
996 | ||
997 | static int xfrm_state_get_or_delete(int argc, char **argv, int delete) | |
998 | { | |
999 | struct rtnl_handle rth; | |
1000 | struct { | |
1001 | struct nlmsghdr n; | |
1002 | struct xfrm_usersa_id xsid; | |
1003 | char buf[RTA_BUF_SIZE]; | |
1004 | } req = { | |
1005 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsid)), | |
1006 | .n.nlmsg_flags = NLM_F_REQUEST, | |
1007 | .n.nlmsg_type = delete ? XFRM_MSG_DELSA : XFRM_MSG_GETSA, | |
1008 | .xsid.family = preferred_family, | |
1009 | }; | |
1010 | struct xfrm_id id; | |
1011 | char *idp = NULL; | |
1012 | struct xfrm_mark mark = {0, 0}; | |
1013 | ||
1014 | while (argc > 0) { | |
1015 | xfrm_address_t saddr; | |
1016 | ||
1017 | if (strcmp(*argv, "mark") == 0) { | |
1018 | xfrm_parse_mark(&mark, &argc, &argv); | |
1019 | } else { | |
1020 | if (idp) | |
1021 | invarg("unknown", *argv); | |
1022 | idp = *argv; | |
1023 | ||
1024 | /* ID */ | |
1025 | memset(&id, 0, sizeof(id)); | |
1026 | memset(&saddr, 0, sizeof(saddr)); | |
1027 | xfrm_id_parse(&saddr, &id, &req.xsid.family, 0, | |
1028 | &argc, &argv); | |
1029 | ||
1030 | memcpy(&req.xsid.daddr, &id.daddr, sizeof(req.xsid.daddr)); | |
1031 | req.xsid.spi = id.spi; | |
1032 | req.xsid.proto = id.proto; | |
1033 | ||
1034 | addattr_l(&req.n, sizeof(req.buf), XFRMA_SRCADDR, | |
1035 | (void *)&saddr, sizeof(saddr)); | |
1036 | } | |
1037 | ||
1038 | argc--; argv++; | |
1039 | } | |
1040 | ||
1041 | if (mark.m & mark.v) { | |
1042 | int r = addattr_l(&req.n, sizeof(req.buf), XFRMA_MARK, | |
1043 | (void *)&mark, sizeof(mark)); | |
1044 | if (r < 0) { | |
1045 | fprintf(stderr, "XFRMA_MARK failed\n"); | |
1046 | exit(1); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
1051 | exit(1); | |
1052 | ||
1053 | if (req.xsid.family == AF_UNSPEC) | |
1054 | req.xsid.family = AF_INET; | |
1055 | ||
1056 | if (delete) { | |
1057 | if (rtnl_talk(&rth, &req.n, NULL) < 0) | |
1058 | exit(2); | |
1059 | } else { | |
1060 | struct nlmsghdr *answer; | |
1061 | ||
1062 | if (rtnl_talk(&rth, &req.n, &answer) < 0) | |
1063 | exit(2); | |
1064 | ||
1065 | if (xfrm_state_print(answer, (void *)stdout) < 0) { | |
1066 | fprintf(stderr, "An error :-)\n"); | |
1067 | exit(1); | |
1068 | } | |
1069 | ||
1070 | free(answer); | |
1071 | } | |
1072 | ||
1073 | rtnl_close(&rth); | |
1074 | ||
1075 | return 0; | |
1076 | } | |
1077 | ||
1078 | /* | |
1079 | * With an existing state of nlmsg, make new nlmsg for deleting the state | |
1080 | * and store it to buffer. | |
1081 | */ | |
1082 | static int xfrm_state_keep(struct nlmsghdr *n, void *arg) | |
1083 | { | |
1084 | struct xfrm_buffer *xb = (struct xfrm_buffer *)arg; | |
1085 | struct rtnl_handle *rth = xb->rth; | |
1086 | struct xfrm_usersa_info *xsinfo = NLMSG_DATA(n); | |
1087 | int len = n->nlmsg_len; | |
1088 | struct nlmsghdr *new_n; | |
1089 | struct xfrm_usersa_id *xsid; | |
1090 | struct rtattr *tb[XFRMA_MAX+1]; | |
1091 | ||
1092 | if (n->nlmsg_type != XFRM_MSG_NEWSA) { | |
1093 | fprintf(stderr, "Not a state: %08x %08x %08x\n", | |
1094 | n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags); | |
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | len -= NLMSG_LENGTH(sizeof(*xsinfo)); | |
1099 | if (len < 0) { | |
1100 | fprintf(stderr, "BUG: wrong nlmsg len %d\n", len); | |
1101 | return -1; | |
1102 | } | |
1103 | ||
1104 | if (!xfrm_state_filter_match(xsinfo)) | |
1105 | return 0; | |
1106 | ||
1107 | if (xb->offset > xb->size) { | |
1108 | fprintf(stderr, "State buffer overflow\n"); | |
1109 | return -1; | |
1110 | } | |
1111 | ||
1112 | new_n = (struct nlmsghdr *)(xb->buf + xb->offset); | |
1113 | new_n->nlmsg_len = NLMSG_LENGTH(sizeof(*xsid)); | |
1114 | new_n->nlmsg_flags = NLM_F_REQUEST; | |
1115 | new_n->nlmsg_type = XFRM_MSG_DELSA; | |
1116 | new_n->nlmsg_seq = ++rth->seq; | |
1117 | ||
1118 | xsid = NLMSG_DATA(new_n); | |
1119 | xsid->family = xsinfo->family; | |
1120 | memcpy(&xsid->daddr, &xsinfo->id.daddr, sizeof(xsid->daddr)); | |
1121 | xsid->spi = xsinfo->id.spi; | |
1122 | xsid->proto = xsinfo->id.proto; | |
1123 | ||
1124 | addattr_l(new_n, xb->size, XFRMA_SRCADDR, &xsinfo->saddr, | |
1125 | sizeof(xsid->daddr)); | |
1126 | ||
1127 | parse_rtattr(tb, XFRMA_MAX, XFRMS_RTA(xsinfo), len); | |
1128 | ||
1129 | if (tb[XFRMA_MARK]) { | |
1130 | int r = addattr_l(new_n, xb->size, XFRMA_MARK, | |
1131 | (void *)RTA_DATA(tb[XFRMA_MARK]), tb[XFRMA_MARK]->rta_len); | |
1132 | if (r < 0) { | |
1133 | fprintf(stderr, "%s: XFRMA_MARK failed\n", __func__); | |
1134 | exit(1); | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | xb->offset += new_n->nlmsg_len; | |
1139 | xb->nlmsg_count++; | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | ||
1144 | static int xfrm_state_list_or_deleteall(int argc, char **argv, int deleteall) | |
1145 | { | |
1146 | char *idp = NULL; | |
1147 | struct rtnl_handle rth; | |
1148 | ||
1149 | if (argc > 0) | |
1150 | filter.use = 1; | |
1151 | filter.xsinfo.family = preferred_family; | |
1152 | ||
1153 | while (argc > 0) { | |
1154 | if (strcmp(*argv, "mode") == 0) { | |
1155 | NEXT_ARG(); | |
1156 | xfrm_mode_parse(&filter.xsinfo.mode, &argc, &argv); | |
1157 | ||
1158 | filter.mode_mask = XFRM_FILTER_MASK_FULL; | |
1159 | ||
1160 | } else if (strcmp(*argv, "reqid") == 0) { | |
1161 | NEXT_ARG(); | |
1162 | xfrm_reqid_parse(&filter.xsinfo.reqid, &argc, &argv); | |
1163 | ||
1164 | filter.reqid_mask = XFRM_FILTER_MASK_FULL; | |
1165 | ||
1166 | } else if (strcmp(*argv, "flag") == 0) { | |
1167 | NEXT_ARG(); | |
1168 | xfrm_state_flag_parse(&filter.xsinfo.flags, &argc, &argv); | |
1169 | ||
1170 | filter.state_flags_mask = XFRM_FILTER_MASK_FULL; | |
1171 | ||
1172 | } else { | |
1173 | if (idp) | |
1174 | invarg("unknown", *argv); | |
1175 | idp = *argv; | |
1176 | ||
1177 | /* ID */ | |
1178 | xfrm_id_parse(&filter.xsinfo.saddr, &filter.xsinfo.id, | |
1179 | &filter.xsinfo.family, 1, &argc, &argv); | |
1180 | if (preferred_family == AF_UNSPEC) | |
1181 | preferred_family = filter.xsinfo.family; | |
1182 | } | |
1183 | argc--; argv++; | |
1184 | } | |
1185 | ||
1186 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
1187 | exit(1); | |
1188 | ||
1189 | if (deleteall) { | |
1190 | struct xfrm_buffer xb; | |
1191 | char buf[NLMSG_DELETEALL_BUF_SIZE]; | |
1192 | int i; | |
1193 | ||
1194 | xb.buf = buf; | |
1195 | xb.size = sizeof(buf); | |
1196 | xb.rth = &rth; | |
1197 | ||
1198 | for (i = 0; ; i++) { | |
1199 | struct { | |
1200 | struct nlmsghdr n; | |
1201 | char buf[NLMSG_BUF_SIZE]; | |
1202 | } req = { | |
1203 | .n.nlmsg_len = NLMSG_HDRLEN, | |
1204 | .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST, | |
1205 | .n.nlmsg_type = XFRM_MSG_GETSA, | |
1206 | .n.nlmsg_seq = rth.dump = ++rth.seq, | |
1207 | }; | |
1208 | ||
1209 | xb.offset = 0; | |
1210 | xb.nlmsg_count = 0; | |
1211 | ||
1212 | if (show_stats > 1) | |
1213 | fprintf(stderr, "Delete-all round = %d\n", i); | |
1214 | ||
1215 | if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) { | |
1216 | perror("Cannot send dump request"); | |
1217 | exit(1); | |
1218 | } | |
1219 | ||
1220 | if (rtnl_dump_filter(&rth, xfrm_state_keep, &xb) < 0) { | |
1221 | fprintf(stderr, "Delete-all terminated\n"); | |
1222 | exit(1); | |
1223 | } | |
1224 | if (xb.nlmsg_count == 0) { | |
1225 | if (show_stats > 1) | |
1226 | fprintf(stderr, "Delete-all completed\n"); | |
1227 | break; | |
1228 | } | |
1229 | ||
1230 | if (rtnl_send_check(&rth, xb.buf, xb.offset) < 0) { | |
1231 | perror("Failed to send delete-all request\n"); | |
1232 | exit(1); | |
1233 | } | |
1234 | if (show_stats > 1) | |
1235 | fprintf(stderr, "Delete-all nlmsg count = %d\n", xb.nlmsg_count); | |
1236 | ||
1237 | xb.offset = 0; | |
1238 | xb.nlmsg_count = 0; | |
1239 | } | |
1240 | ||
1241 | } else { | |
1242 | struct xfrm_address_filter addrfilter = { | |
1243 | .saddr = filter.xsinfo.saddr, | |
1244 | .daddr = filter.xsinfo.id.daddr, | |
1245 | .family = filter.xsinfo.family, | |
1246 | .splen = filter.id_src_mask, | |
1247 | .dplen = filter.id_dst_mask, | |
1248 | }; | |
1249 | struct { | |
1250 | struct nlmsghdr n; | |
1251 | char buf[NLMSG_BUF_SIZE]; | |
1252 | } req = { | |
1253 | .n.nlmsg_len = NLMSG_HDRLEN, | |
1254 | .n.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST, | |
1255 | .n.nlmsg_type = XFRM_MSG_GETSA, | |
1256 | .n.nlmsg_seq = rth.dump = ++rth.seq, | |
1257 | }; | |
1258 | ||
1259 | if (filter.xsinfo.id.proto) | |
1260 | addattr8(&req.n, sizeof(req), XFRMA_PROTO, | |
1261 | filter.xsinfo.id.proto); | |
1262 | addattr_l(&req.n, sizeof(req), XFRMA_ADDRESS_FILTER, | |
1263 | &addrfilter, sizeof(addrfilter)); | |
1264 | ||
1265 | if (rtnl_send(&rth, (void *)&req, req.n.nlmsg_len) < 0) { | |
1266 | perror("Cannot send dump request"); | |
1267 | exit(1); | |
1268 | } | |
1269 | ||
1270 | if (rtnl_dump_filter(&rth, xfrm_state_print, stdout) < 0) { | |
1271 | fprintf(stderr, "Dump terminated\n"); | |
1272 | exit(1); | |
1273 | } | |
1274 | } | |
1275 | ||
1276 | rtnl_close(&rth); | |
1277 | ||
1278 | exit(0); | |
1279 | } | |
1280 | ||
1281 | static int print_sadinfo(struct nlmsghdr *n, void *arg) | |
1282 | { | |
1283 | FILE *fp = (FILE *)arg; | |
1284 | __u32 *f = NLMSG_DATA(n); | |
1285 | struct rtattr *tb[XFRMA_SAD_MAX+1]; | |
1286 | struct rtattr *rta; | |
1287 | int len = n->nlmsg_len; | |
1288 | ||
1289 | len -= NLMSG_LENGTH(sizeof(__u32)); | |
1290 | if (len < 0) { | |
1291 | fprintf(stderr, "SADinfo: Wrong len %d\n", len); | |
1292 | return -1; | |
1293 | } | |
1294 | ||
1295 | rta = XFRMSAPD_RTA(f); | |
1296 | parse_rtattr(tb, XFRMA_SAD_MAX, rta, len); | |
1297 | ||
1298 | if (tb[XFRMA_SAD_CNT]) { | |
1299 | __u32 cnt; | |
1300 | ||
1301 | fprintf(fp, "\t SAD"); | |
1302 | cnt = rta_getattr_u32(tb[XFRMA_SAD_CNT]); | |
1303 | fprintf(fp, " count %u", cnt); | |
1304 | } else { | |
1305 | fprintf(fp, "BAD SAD info returned\n"); | |
1306 | return -1; | |
1307 | } | |
1308 | ||
1309 | if (show_stats) { | |
1310 | if (tb[XFRMA_SAD_HINFO]) { | |
1311 | struct xfrmu_sadhinfo *si; | |
1312 | ||
1313 | if (RTA_PAYLOAD(tb[XFRMA_SAD_HINFO]) < sizeof(*si)) { | |
1314 | fprintf(fp, "BAD SAD length returned\n"); | |
1315 | return -1; | |
1316 | } | |
1317 | ||
1318 | si = RTA_DATA(tb[XFRMA_SAD_HINFO]); | |
1319 | fprintf(fp, " (buckets "); | |
1320 | fprintf(fp, "count %d", si->sadhcnt); | |
1321 | fprintf(fp, " Max %d", si->sadhmcnt); | |
1322 | fprintf(fp, ")"); | |
1323 | } | |
1324 | } | |
1325 | fprintf(fp, "\n"); | |
1326 | ||
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | static int xfrm_sad_getinfo(int argc, char **argv) | |
1331 | { | |
1332 | struct rtnl_handle rth; | |
1333 | struct { | |
1334 | struct nlmsghdr n; | |
1335 | __u32 flags; | |
1336 | } req = { | |
1337 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.flags)), | |
1338 | .n.nlmsg_flags = NLM_F_REQUEST, | |
1339 | .n.nlmsg_type = XFRM_MSG_GETSADINFO, | |
1340 | .flags = 0XFFFFFFFF, | |
1341 | }; | |
1342 | struct nlmsghdr *answer; | |
1343 | ||
1344 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
1345 | exit(1); | |
1346 | ||
1347 | if (rtnl_talk(&rth, &req.n, &answer) < 0) | |
1348 | exit(2); | |
1349 | ||
1350 | print_sadinfo(answer, (void *)stdout); | |
1351 | ||
1352 | free(answer); | |
1353 | rtnl_close(&rth); | |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | static int xfrm_state_flush(int argc, char **argv) | |
1359 | { | |
1360 | struct rtnl_handle rth; | |
1361 | struct { | |
1362 | struct nlmsghdr n; | |
1363 | struct xfrm_usersa_flush xsf; | |
1364 | } req = { | |
1365 | .n.nlmsg_len = NLMSG_LENGTH(sizeof(req.xsf)), | |
1366 | .n.nlmsg_flags = NLM_F_REQUEST, | |
1367 | .n.nlmsg_type = XFRM_MSG_FLUSHSA, | |
1368 | }; | |
1369 | char *protop = NULL; | |
1370 | ||
1371 | while (argc > 0) { | |
1372 | if (strcmp(*argv, "proto") == 0) { | |
1373 | int ret; | |
1374 | ||
1375 | if (protop) | |
1376 | duparg("proto", *argv); | |
1377 | protop = *argv; | |
1378 | ||
1379 | NEXT_ARG(); | |
1380 | ||
1381 | ret = xfrm_xfrmproto_getbyname(*argv); | |
1382 | if (ret < 0) | |
1383 | invarg("XFRM-PROTO value is invalid", *argv); | |
1384 | ||
1385 | req.xsf.proto = (__u8)ret; | |
1386 | } else | |
1387 | invarg("unknown", *argv); | |
1388 | ||
1389 | argc--; argv++; | |
1390 | } | |
1391 | ||
1392 | if (rtnl_open_byproto(&rth, 0, NETLINK_XFRM) < 0) | |
1393 | exit(1); | |
1394 | ||
1395 | if (show_stats > 1) | |
1396 | fprintf(stderr, "Flush state with XFRM-PROTO value \"%s\"\n", | |
1397 | strxf_xfrmproto(req.xsf.proto)); | |
1398 | ||
1399 | if (rtnl_talk(&rth, &req.n, NULL) < 0) | |
1400 | exit(2); | |
1401 | ||
1402 | rtnl_close(&rth); | |
1403 | ||
1404 | return 0; | |
1405 | } | |
1406 | ||
1407 | int do_xfrm_state(int argc, char **argv) | |
1408 | { | |
1409 | if (argc < 1) | |
1410 | return xfrm_state_list_or_deleteall(0, NULL, 0); | |
1411 | ||
1412 | if (matches(*argv, "add") == 0) | |
1413 | return xfrm_state_modify(XFRM_MSG_NEWSA, 0, | |
1414 | argc-1, argv+1); | |
1415 | if (matches(*argv, "update") == 0) | |
1416 | return xfrm_state_modify(XFRM_MSG_UPDSA, 0, | |
1417 | argc-1, argv+1); | |
1418 | if (matches(*argv, "allocspi") == 0) | |
1419 | return xfrm_state_allocspi(argc-1, argv+1); | |
1420 | if (matches(*argv, "delete") == 0) | |
1421 | return xfrm_state_get_or_delete(argc-1, argv+1, 1); | |
1422 | if (matches(*argv, "deleteall") == 0 || matches(*argv, "delall") == 0) | |
1423 | return xfrm_state_list_or_deleteall(argc-1, argv+1, 1); | |
1424 | if (matches(*argv, "list") == 0 || matches(*argv, "show") == 0 | |
1425 | || matches(*argv, "lst") == 0) | |
1426 | return xfrm_state_list_or_deleteall(argc-1, argv+1, 0); | |
1427 | if (matches(*argv, "get") == 0) | |
1428 | return xfrm_state_get_or_delete(argc-1, argv+1, 0); | |
1429 | if (matches(*argv, "flush") == 0) | |
1430 | return xfrm_state_flush(argc-1, argv+1); | |
1431 | if (matches(*argv, "count") == 0) { | |
1432 | return xfrm_sad_getinfo(argc, argv); | |
1433 | } | |
1434 | if (matches(*argv, "help") == 0) | |
1435 | usage(); | |
1436 | fprintf(stderr, "Command \"%s\" is unknown, try \"ip xfrm state help\".\n", *argv); | |
1437 | exit(-1); | |
1438 | } |